Top 10 units factsUnits quiz
What was used as a unit of mass in the classical times?
Carob seed. Carat, a unit of mass equal to 200 mg, is derived from a carob seed (Greek kerátion). People commonly believed that the seeds have unusually low variability in mass. Modern research denied this claim.
When did the USA introduce the metric system as preferred for weights and measures?
1975. President Gerald Ford signed the Metric Conversion Act in1975. It declared the metric system "the preferred system of weights and measures for United States trade and commerce", but permitted the use of United States customary units in all activities. The metrification board was abolished in 1982 by President Ronald Reagan.
What it is?
A clock. This is the clock from the time of the Great French Revolution. During this time the French replaced various non-standard units in physics with the decimal metric system. The 24-hour division of the day was also abolished in favour of 20-hour, however, this regulation did not survive.
How many litres does an oil barrel hold?
About 159. The barrel is one of several units of volume applied in various contexts; there are dry barrels, fluid barrels, oil barrels and so on. The volumes in common usage range from about 100 to 200 litres. In the worldwide oil industry, an oil barrel is defined as 42 US gallons, which is about 159 litres or 35 imperial gallons.
What units are used to measure the bitterness of beer?
IBU. The International Bittering Units scale, or simply IBU scale, is used to approximately quantify the bitterness of beer. This scale is not measured on the perceived bitterness of the beer, but rather the amount of iso-alpha acids.
How many basic units are in the SI system?
7. The SI system has seven basic units, it's a metre (length), kilogram (mass), second (time), ampere (electrical current), kelvin (temperature), candela (luminous intensity & mole (amount of substance)
Saffir-Simpson scale is used to measure ...
Hurricane force. Officially, the Saffir–Simpson hurricane wind scale is used only to describe hurricanes forming in the Atlantic Ocean and northern Pacific Ocean east of the International Date Line. Other areas use different scales to label these storms, which are called "cyclones" or "typhoons", depending on the area.
What does Mbps mean?
Million bits per second. Common data rate units are multiples of bits per second (bit/s) and bytes per second (B/s). For example, the data rates of modern residential high-speed Internet connections are commonly expressed in megabits per second (Mbit/s).
1 MB is ...
1024 kB. In computing, the mega prefix usually means the number 1 048 576 and is the result of 1024 × 1024 = 2 ^ 20. In decimal units it is slightly different, but they are not used in informatics.1 MB = 1024 kB 1 kB = 1024 B 1 MB = 1 048 576 B 1 B = 8 b (bits) 1 MB = 8 388 608 b
What units are used in the stun grenade specifications, to describe its power?
Decibels and candelas. The M84 grenade on the photo emits 170–180 decibels and 6–8 million Candela within a 5-foot (1.5 m) radius. The loud blast causes temporary loss of hearing, and also loss of balance by disturbing the fluid in the ear. The flash makes vision impossible for approximately five seconds.